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  2. Relative dating - Wikipedia

    en.wikipedia.org/wiki/Relative_dating

    Craters are very useful in relative dating; as a general rule, the younger a planetary surface is, the fewer craters it has. If long-term cratering rates are known to enough precision, crude absolute dates can be applied based on craters alone; however, cratering rates outside the Earth-Moon system are poorly known. [8]

  3. Absolute space and time - Wikipedia

    en.wikipedia.org/wiki/Absolute_space_and_time

    Absolute, true and mathematical time, of itself, and from its own nature flows equably without regard to anything external, and by another name is called duration: relative, apparent and common time, is some sensible and external (whether accurate or unequable) measure of duration by the means of motion, which is commonly used instead of true ...

  4. Absolute configuration - Wikipedia

    en.wikipedia.org/wiki/Absolute_configuration

    In chemistry, absolute configuration refers to the spatial arrangement of atoms within a molecular entity (or group) that is chiral, and its resultant stereochemical description. [1] Absolute configuration is typically relevant in organic molecules where carbon is bonded to four different substituents .

  5. Glossary of biology - Wikipedia

    en.wikipedia.org/wiki/Glossary_of_biology

    This glossary of biology terms is a list of definitions of fundamental terms and concepts used in biology, the study of life and of living organisms.It is intended as introductory material for novices; for more specific and technical definitions from sub-disciplines and related fields, see Glossary of cell biology, Glossary of genetics, Glossary of evolutionary biology, Glossary of ecology ...

  6. Time in physics - Wikipedia

    en.wikipedia.org/wiki/Time_in_physics

    Absolute, true, and mathematical time, of itself, and from its own nature flows equably without regard to anything external, and by another name is called duration: relative, apparent, and common time, is some sensible and external (whether accurate or unequable) measure of duration by the means of motion, which is commonly used instead of true ...

  7. Absolute dating - Wikipedia

    en.wikipedia.org/wiki/Absolute_dating

    Absolute dating is the process of determining an age on a specified chronology in archaeology and geology. Some scientists prefer the terms chronometric or calendar dating , as use of the word "absolute" implies an unwarranted certainty of accuracy.

  8. Biostatistics - Wikipedia

    en.wikipedia.org/wiki/Biostatistics

    The correct definition of the main hypothesis and the research plan will reduce errors while taking a decision in understanding a phenomenon. The research plan might include the research question, the hypothesis to be tested, the experimental design , data collection methods, data analysis perspectives and costs involved.

  9. History of special relativity - Wikipedia

    en.wikipedia.org/wiki/History_of_special_relativity

    Some scientists and philosophers of science were critical of Newton's definitions of absolute space and time. [36] [37] [38] Ernst Mach (1883) argued that absolute time and space are essentially metaphysical concepts and thus scientifically meaningless, and suggested that only relative motion between material bodies is a useful concept in ...